In 2015, we installed 10 different models of solar panels representing three different types of technologies at our Madison, Wisconsin headquarters. We wanted to study different solar technologies so we could make educated decisions about solar energy for our customers and the energy industry.
The project included installation of a 30-kilowatt battery storage system. This allows us to store power and test the impact of shifting its use to off-peak periods when electricity costs are lower.
This experience helped us learn how on-site renewable power sources and energy storage would integrate with the existing power grid.
We collaborated with the Electric Power Research Institute (EPRI) on the project. EPRI is the leading national research and development group in the areas of electric use, generation and delivery.
The snapshot
- 1,300 total solar panels
- Total capacity of 300 kilowatts, enough to power about 55 homes
- 28 individual ground-mounted solar features
- Nine roof-mounted solar arrays
- Five solar parking canopies
- Two solar café tables
- One energy battery storage system
- Public walking paths and educational signage
Performance data website (historical data through July 26, 2020).